Retort



ciples of my invention.

Asshown in the drawing, the retort con Patented June 22, 1926.

UNITED STATES.-

PATENT, oral-ca.

smuan mm, or mum, rmnrn, rnmnm.

amour.

Application ma Nbvembcr as, 1984.8eriallio. 758,165,.andin Buom1-Ilnland w s, 21, ms.

This invention relates to retorts and particularlyv to retorts adaptedfor making charcoal from wood, although the principles of'constructionfor a retort, in accordance I with this invention, may be employed fordrying purpose generally or for distillation processes. TKe principalobject of the invention is to provide a new and improved constructionfor a retort of simple and inexpensive construction, and of greatefliciency. i

The accompanymg drawing Is a somewhat diagrammatic cross sectional viewof a 'retort constructed in accordance with the prinsists of anouter-casing r intended to be heated in any suitable way from theoutside thereof. The casing preferably being provided with an annularair space t. Concentrically located within the outer casing r and spacedtherefrom so as to provide an annular space '0, is a vessel 8, adaptedto contain the material to be treated. The lower end of the vessel '8 isprovided with an inwardly tapered neck, having a central aperturea atthe end'thereof, above which a baflle plate a is mounted, while theupper suitable manner within the outer casing r,

40. so as to provide a spaceat the bottom of said casing between thevessel and the casing, with which space the annular space '0 is in"communication. An outlet pipe a is connected to the bottom of thecasing 1' for per-- 4 mitting the escape of combustion gases, vapors orthe like. It will be noted that the space between the bottom of thevessel 8 and theouter casing, the space between the vessel and the coverIn, and the annular space v, constitute a continuous passage. Means areprovided for circulating through the ma- A foraminated screen w isterial, within the vessels, the air heated within this passage, by theheat applied to the outside of the retort, and such means com rises afan blower located in the opening in the bottle neck '0 the vessel 8,said fan being mounted u jects through the which may be driven by ansuitable means.

Th operation of the device is as follows: The material to be treated, asfor example,

11 a shaft which procharcoal is placed u n the screen w at the bottom ofthe vesse a. The retort is then heated from the outside b any suitablettom of the retort,=and-.

wood, which itis desired to convert into means. The rotation of the an fcauses the heated air within the passage between the vessel 8 and theouter casing r to be drawn inwardly through the opening a, down throughthe material within the vessels, and expelled through the aperture 1 atthe bottom of the vessel, the course of the heated air being indicatedby the arrows in the drawing. The provision of the baflle it preventstheair from being drawn through the vowel 8 only in the central're'gionthereof, and insures that the air will be. distributed creases, becauseof the presence of gases or vapors, due to the combustion of. thematerial within the vessel, such gases will pass outwardly I claim: I

1. A retort comprising an outer casing, an inner vesel in which thematerialto be through the opening a.

treated is adgpted to be placed, said vessel being mount concentricallwithin, and having its side walls spaced V mm, the inner walls of saidretort to. provide an annular passage, said vessel havingafrustro-conical assage,

and a draft inducing device locate in the p I cause the air heated. insaid annular passage to be circulated through the interior of said.

vessel.

2. A device as set forth in claim 1, in which a bafiie plate is mountedabove the draft inducing device in axial alignment with the bottomaperture to cause the air to be circulated throughout the entiremass ofmaterialv within said; vessel. I

In testimony whereof I have afixed siguature.

emcee FoReeEN.

